Polymer-supported Pd(AAEMA)(2) (Pd-pol) [AAEMA(-): deprotonated form of 2-(acetoacetoxy)ethyl methacrylate] in the presence of chiral ligands catalyses the asymmetric substitution of rac-1,3-diphenyl-2-propenyl acetate with dimethyl malonate. A series of conventional ligands were tested: the enantioselectivities (up to 93% ee) were similar to those observed employing the analogous homogeneous catalyst or a classical soluble palladium complex. In some case the supported catalyst was used in two subsequent runs with only a slight loss of activity and selectivity. (C) 2003 Elsevier Science B.V. All rights reserved.
Asymmetric allylic alkylation using a polymer-supported palladium catalyst in the presence of chiral ligands / Dell'Anna, M. M.; Mastrorilli, P.; Nobile, C. F.; Suranna, G. P.. - In: JOURNAL OF MOLECULAR CATALYSIS. A: CHEMICAL. - ISSN 1381-1169. - 201:1-2(2003), pp. 131-135. [10.1016/S1381-1169(03)00126-2]
Asymmetric allylic alkylation using a polymer-supported palladium catalyst in the presence of chiral ligands
Dell'Anna, M. M.;Mastrorilli, P.;Nobile, C. F.;Suranna, G. P.
2003-01-01
Abstract
Polymer-supported Pd(AAEMA)(2) (Pd-pol) [AAEMA(-): deprotonated form of 2-(acetoacetoxy)ethyl methacrylate] in the presence of chiral ligands catalyses the asymmetric substitution of rac-1,3-diphenyl-2-propenyl acetate with dimethyl malonate. A series of conventional ligands were tested: the enantioselectivities (up to 93% ee) were similar to those observed employing the analogous homogeneous catalyst or a classical soluble palladium complex. In some case the supported catalyst was used in two subsequent runs with only a slight loss of activity and selectivity. (C) 2003 Elsevier Science B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
